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| author | Willem de Bruijn <willemb@google.com> | 2013-04-23 00:39:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-25 01:22:22 -0400 |
| commit | 2e31396fa14be50a98c5d2b00416ebd74d381c1f (patch) | |
| tree | e01cf0a24659116265e189a68331bd74ebb48d42 /net/core/skbuff.c | |
| parent | 92dea7c06656f709a3957aacef20574ce3dbe6fc (diff) | |
| download | op-kernel-dev-2e31396fa14be50a98c5d2b00416ebd74d381c1f.zip op-kernel-dev-2e31396fa14be50a98c5d2b00416ebd74d381c1f.tar.gz | |
packet: tx timestamping on tpacket ring
When transmit timestamping is enabled at the socket level, record a
timestamp on packets written to a PACKET_TX_RING. Tx timestamps are
always looped to the application over the socket error queue. Software
timestamps are also written back into the packet frame header in the
packet ring.
Reported-by: Paul Chavent <paul.chavent@onera.fr>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 898cf5c..af9185d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3327,12 +3327,8 @@ void skb_tstamp_tx(struct sk_buff *orig_skb, if (!sk) return; - skb = skb_clone(orig_skb, GFP_ATOMIC); - if (!skb) - return; - if (hwtstamps) { - *skb_hwtstamps(skb) = + *skb_hwtstamps(orig_skb) = *hwtstamps; } else { /* @@ -3340,9 +3336,13 @@ void skb_tstamp_tx(struct sk_buff *orig_skb, * so keep the shared tx_flags and only * store software time stamp */ - skb->tstamp = ktime_get_real(); + orig_skb->tstamp = ktime_get_real(); } + skb = skb_clone(orig_skb, GFP_ATOMIC); + if (!skb) + return; + serr = SKB_EXT_ERR(skb); memset(serr, 0, sizeof(*serr)); serr->ee.ee_errno = ENOMSG; |
